Nut-lock



l. HOHSFALL.

WT LOCK. APPLICATWN FILED FEB- 1920.

1,368, 1 51. Ptenlzed Feb. 8, 1921.

vJ1] 4 jig, TTI |I lf'fT-T] 5f? ////ff Joa w @mf Ublli'l? NUT-LOCK.

Application lecl February 2?, 1920.

To @ZZ eri/om t may conce/rn Be it known that l, JOHN ltlonsnimn, subject of the King of Great Britain, residing at Bradford, in the county ot York and Kingdom of England, have invented certain new and useful `linpro.fenients in Nut- Looks, of which the following is a speciiication.

rlie present invention relates to an iniproved nut lock, more particularly suitable for the securing oi? the nuts on the bolts or set-screws of shaft bearings lbut obviously applicable to a variety et other purposes.

An object of the present invention is to prevent unpredeterinined rotation ot' a nut due to vibration and yet to allow of instantaneous adjustment by means of any ordinary spanner. v

coording to this invention a spring controlled'plunger is adapted to engage the flat or edge ot a nut.

The invention is more particularly described with reference to the accompanying drawings in which Figure l is a part sectional elevation of the invention applied to the cap bolts` of a shaft bearing.

Fig. 2 is a corresponding plan View.

A cap l which may be integral with a lubricant chamber 2 having,` a perforation leading to the bearing, is adapted to -receive one or more plungers 3 controlled by Specification of Letters .'E'atent.

Patented Feb. 8, N223i sensu no. 351,836.

springs il, one spring thereby controlling, in the arrangement shown, a pair of plungers pushing these radially outward. The plungers have flat faces which are preferably notched as at 6 so that if a nut has six .faces it can be locked in either of twelve positions, six in which the flat ot the plunger 5 engages a ilat on the nut and six in which the notch 6 engages an edge of the nut 8. The cap l is preferably arranged with a hollow `pin 9 such that it may be wedged by means of this pin into the usual oil lubricant channel in the top piece l0 of the bearing.

I declare that what I claim is ifi nut loch comprising in combination a plunger, means to guide said. plunger radially to the center' of the nut to be locked, a spring pressing said plunger elastically against the nut and capable of contraction by the diilerence in distance letween the tlats and angles of the nut to be locked, and a hollow taper pin integral with said guides for fitting the device to a bearing cap.

in witness whereof, l have hereunto signed 'my naine this 12th day of February, 1920, in the presence of two. subscribing witnesses.

JOHN HORSFALL. lllfitnesses EDWARD BEANLAND KNIGHT, HENRY HERBERT HoRsFALL. 

